OE or water left in the drum
Begin with the visible drain-route checklist. Its result explains whether the separate filter task is appropriate. A code alone does not identify a failed pump.
Open the drain observation guide →LG WM4000HWA
A washer symptom. A clear starting point.
Choose what you have already observed. Start with one matching guide and keep its result before moving on.
Match the scope first
The operating guides cover US WM4000HWA with manual MFL71728908 Rev.02_051022. Each guide checks the full model, control panel and manual before any steps.
Find and compare your modelIf there is an active leak, burning smell, damaged wiring, hot water or unsafe access, pause the checklist and seek appropriate help. Do not open covers, reach into pumps or run another cycle just to fill in this record.
What have you observed?
Keep the result of each check
- Exact display characters, including whether the display was blank
- When in the cycle it happened and whether water remained
- What you checked safely, what changed and what remains unknown
Each linked task has its own preparation checks, before-and-after fields and downloads. A completed web checklist is a record of your observations.
Different model, no safe observation or a symptom that remains?
Prepare what you already know for qualified support. You can make a useful record without attempting a repair.
Make a service record →